Results 61 to 70 of about 3,473,869 (204)

Endothelial Barrier Function.

Journal of Investigative Dermatology, 1989
The endothelial barrier in all organ beds allows the free exchange of water, but is restrictive to varying degrees to the transport of solutes such as albumin. For example, in the brain microvessels, the endothelial barrier restricts the transport of protein, whereas in fenestrated and continuous endothelial cells of the renal and lung endothelial ...
A B, Malik, J J, Lynch, J A, Cooper
openaire   +2 more sources

Thermal barrier pressure seal [PDF]

, 1980
An apparatus is described for providing thermal and pressure sealing in an elongated space of varying width between adjacent surface of two members. The apparatus is mounted for at least limited lateral movement between the members and may comprise: an ...
Bellavia, J., Jr., Kane, J. O.
core   +1 more source

Resonant escape over an oscillating barrier in single-electron ratchet transfer

, 2010
Single-electron escape from a metastable state over an oscillating barrier is experimentally investigated in silicon-based ratchet transfer. When the barrier is oscillating on a time scale characteristic of the single-electron escape, synchronization ...
Fujiwara, Akira, Itoh, Kohei M., Miyamoto, Satoru, Nishiguchi, Katsuhiko, Ono, Yukinori   +4 more
core   +1 more source

Potential Barrier Classification by Short-Time Measurement

, 2006
We investigate the short-time dynamics of a delta-function potential barrier on an initially confined wave-packet. There are mainly two conclusions: A) At short times the probability density of the first particles that passed through the barrier is ...
Avi Marchewka, E. Granot, Er’el Granot, M. Abramowitz   +3 more
core   +1 more source

Secretome of brain microvascular endothelial cells promotes endothelial barrier tightness and protects against hypoxia-induced vascular leakage

Molecular Medicine
Cell-based therapeutic strategies have been proposed as an alternative for brain and blood vessels repair after stroke, but their clinical application is hampered by potential adverse effects.
Rodrigo Azevedo Loiola, Johan Hachani, Sophie Duban-Deweer, Emmanuel Sevin, Paulina Bugno, Agnieszka Kowalska, Eleonora Rizzi, Fumitaka Shimizu, Takashi Kanda, Caroline Mysiorek, Maciej Mazurek, Fabien Gosselet   +11 more
doaj   +1 more source

A Simulated Microgravity Environment Causes a Sustained Defect in Epithelial Barrier Function. [PDF]

, 2019
Intestinal epithelial cell (IEC) junctions constitute a robust barrier to invasion by viruses, bacteria and exposure to ingested agents. Previous studies showed that microgravity compromises the human immune system and increases enteropathogen virulence.
Alvarez, Rocio, Marchelletta, Ronald R, McCole, Declan F, Prisk, G Kim, Sayoc-Becerra, Anica, Stork, Cheryl A   +5 more
core   +1 more source

Periodic Quantum Tunneling and Parametric Resonance with Cigar-Shaped Bose-Einstein Condensates

, 2002
We study the tunneling properties of a cigar-shaped Bose-Einstein condensate by using an effective 1D nonpolynomial nonlinear Schr\"odinger equation (NPSE).
A Parola, Arnold V I, Fribel S, Gross E P, L Reatto, L Salasnich, Landau L D, Pitaevskii L P, Pitaevskii L P, Salasnich L, Salasnich L, Zapata I   +11 more
core   +1 more source

The therapeutic management of gut barrier leaking: the emerging role for mucosal barrier protectors [PDF]

, 2015
OBJECTIVE: Gut barrier is a functional unit organized as a multi-layer system and its multiple functions are crucial for maintaining gut homeostasis. Numerous scientific evidences showed a significant association between gut barrier leaking and gastro ...
Bruno, G, Franceschi, F, Gasbarrini, A, Lopetuso, Lr, Petito, V, Scaldaferri, F   +5 more
core  

Electrical current-driven pinhole formation and insulator-metal transition in tunnel junctions

, 2007
Current Induced Resistance Switching (CIS) was recently observed in thin tunnel junctions (TJs) with ferromagnetic (FM) electrodes and attributed to electromigration of metallic atoms in nanoconstrictions in the insulating barrier. The CIS effect is here
J B Sousa, J Ventura, Nikolic B, P P Freitas, Shang C H, Sharvin Y V, Sorbello R S, Wexler G, Y Liu, Z Zhang   +9 more
core   +1 more source

Exemple, explication et processus de démonstration

Annales de Didactique et de Sciences Cognitives, 2019
The article looks at the proving process in mathematics from a didactic perspective. The study seeks to identify what metamathematics knowledge is at stake when mathematicians produce proof of implications with universal quantifiers.
Thomas Barrier, Azzedine Hajji
doaj   +1 more source